A cobporation of massachti



P. R. GLASS.

FOLDING MACHINE.

MPL10/111011 FILED 110ml. 191s.

1,312,5 32. Patend Aug. 12,1919.

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N" d y 1 @.4

UNITED sTATEs rnTENT OFFICE.

PERLEY R. GLASS, OF BRO'OKLINE, MASSACHUSETTS, ASSIGNOR T0 P. B. GLASS COMPANY, OF BOSTON, 'MASSAGHUSETTS, A. CORPORATION 0F MASSACHU- SETTS.

FO LDING- MACHINE.

Application led November 1` 191B.

To all whom t may concern:

'Be it known that I, PERLEY R. GLASS, a citizen of the United States, residing at Brookline, in the count of Norfolk and State of Massachusetts, ave invented certain Improvements in Folding-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures. I

This invention relates to foldin machines and is herein illustrated as em odied in a machine for folding the margin of a closed vamp.

Machines for performing this operation have been provided with two horizontally extending arms, a work-supporting arm located in position to perm1t a closed vamp to be fed around it and an arm overhanging the work-supporting arm, the driven members which feed the vamp, snip the mar 'n thereof and press the fold together with mechanisms for driving them being mounted partly on the overhanging arm and artly on the work-sup orting arm. These riven members and t eir operating mechanisms occupy more or less space, and the mounting of part of them upon the work-supporting arm limits the extent to which the size of that arm may be reduced. It is desirable, however, that the cross-sectional dimensions of the work-supporting arm be made as small as possible so as to facilitate the folding of Vamps havin narrow throats, but in the prior machines 1t has not been possible to reduce the size of the work-supporting arm to the desired extent because of the necessity for providing space for some driven member, for example the fold-presserand its driving mechanism.

According to one feature of the present invention the driven members which engage the vamp are all mounted on an overhanging arm, such con-struction permittingr the work support to be made of small cross-sec- .tion so that vamps having narrow throats ma readily be operated upon.

rlyhis and other features of the invention. including certain details of construction and combinations of parts, will be described as Specification of Letters Patent.

Patented Aug. 12, 1919.

serial No. 260.732.

embodied in an illustrative machine and pointed out in the appended claims.

Referring now to the accompanying drawings,-

Figure 1 is an elevation of a machine in whch the present invention is embodied, an

Fig. 2 is a detail perspective showing the mounting of the fold-presser and plow.

The illustrative machine is an improvement upon the machine of application Serial No. 5245 filed in my name. Projecting horizontally from the frame 2 of the machine and located so as to permit a closed vamp to be fed around it is a work-supportin arm 1 of small cross-sectionand locate above this is an overhanging arm 5. Mounted in the overhanging arm is a driving shaft 4 which may be rotated through any suitable clutch mechanism (not shown). This arm carries a snipping Vknife 104, a presser-foot 92, and a feeding foot 24. The feeding foot is carried by a rod 36 mounted in a sleeve 38 the stem of which is pivotally held in a slide 48, said slide being connected by a link 52 with a bell-crank spacing lever 54 movement of which about the shaft 115 raises or lowers the slide 48 and thereby the pivot about which the foot 24 oscillates. The stem 36 of the feeding foot 24 is oscillated and also raised and lowered by a cam (not shown). on the shaft 4 which rotates in a cam-follower carried at the upper end of the stem. The stem 96 of the presser foot 92 is reciprocated by a second cam on the shaft 4 which engages a second cam-follower 98 on the upper end of the stem 96. The knife 104 'is normally inoperative but may be rendered operative at any time by moving the rod 112 to the left and thereby moving a hook-shaped piece 108 between a shoulder on the cam-follower 98 and a pin 109, said hook-shaped piece being suitably connected with the knife. A link 86 connected at one end to a treadle-controlled bell-crank lever 66 is connected at the other end at 114 to an arm fast to the farther end of the shaft 115, the rod 112 being yieldingly connected with said arm. A second arm 116 fast to the nearer end of the shaft 115 is provided with a locking pin, the head of which is shown at 118; and this pin muy be caused to enter any one of a number of holes 119 formed in un enlargement on the lever 5 1-, or the 'p1n may be locked in inoperwtlve posltion. When the arm 116 is locked to the ever 54, a downward pull on the trcadle rod will simultaneously throw in the knife end decrease the extent of the intermittent feeds caused by the movements of the feed foot 24. When the arm 116 is not locked to the lever 54, a downward pull on the rod 68 will throw in the knife without effecting the extent of the intermittent feed movements. Pivoted on the work-supporting arm 1 and adapted to coperate with the eeding-foot 24 is an oscillating block 26 the upper edge of which passes throu h a slot in a plate 8. This block is angu arly movable about the axis of the screw 27 andis normally held in rearward position with reference to the feed movement of the work by a springr (not shown) but swings forwardly with the feeding-foot and the stock during each intermittent forward movement of said foot. An anvil 20, mounted on the plate 8, Supports the work during the pressing of the fold; and a age 12 and plow 125, the former mounted on the plate 8, serve respectively to guide the work by engagement with its ey e and to. form the fol he construction which has been thus briefly outlined with the exception of the work-supporting arm 1 and the mounting of the plow 125, is or may be the same as that of the machine of Ythe application and will not be described further in detail.

In the lmachine of the prior supplication the hammer or fold-presser is mounted on a lower arm which corresponds to the arm 1 and the actuating mechanism for the fold* presser pasees through the arm. With such a construction the extentJ to which the size @it the arm may vbe reduced 'is `limited the 4presence of the fold-presserenfd its actu ailing mechaniem.` It is desirable on the other hand to' make the cross-sectional Aelimerrsion ed this armas small as is possible f compatible with rigidity eo that when it vim-p havin a. namow throat is being `o @rated upon t 1e vamp .may be turned rewdilay about the without engaging the sides of the anni if possible, and without stretching the throat of the vamp. Gonsequently any construction which permits the cross-sectionel dimensionof the arm fte be decreased :within measonable :limits tenais to improve the-wohl; tlumedfoutbythe machine.

In 'the present 'maritime no driven parte i Whatever are mounted in or on the work- Supportin aim. its has been leined abolire; f[presstwfoot, feeddngdt and lmife as Wellens vtheir actuating mechanism are mouniod on the overhmlgirfg arm 5. In addition thelfolddpnesser of the present machine is also mounted-upon theisame arm,

Referring more particularly to Fig. 2, the fold'1)resser 101, the operative face of which is inclined complemcntally to the incline of the face of the anvil 20 is carried at one end of :1. link 103 the other end of which is pv oted at 105 to one end of a lever 107, saidlever 'beingr pivoted ut 109 to a stationary part of' the'machine and at 1111 to a rod 113 having at its upper end an eccentric strap which encircles an eccentric on the driving shaft 4. A bracket 215 fastened to the erm 5 has pivot/ed between its arms at 117 one end of a link 119 the other end of which is pivoted at 121 to the link 103 which carries the fold-presser 101. With this construction, rotation of the shaft 4 causes vibration of the fold-presser toward and from the anvil to press the fold` The linka e which hes been described timiparts to tie fold- `presser during its downward movement a movement to the loft or inwardly with respect to the work, that is, a movement from the edge of the fold toward the body portion of the work. The purpose of imparting to the fold-presser this compound downward und inward movement is to luy t-l1c,fold properly and to insure that the e ge of the finished fold shall be a smooth curve. All of the driven members for engaging -the work are thus mounted on the overha-ng-ng arm, and the work-supporting arm may be made of as small cross-sectional dimensions as is consistent with proper rigidity of said arm. Moreover, the present constructionI permits the employment of the improved mechanism for operating the .fold-presser, n construction which would not be permissible if the fold presser were mounted on the work-supporting arm 'because of the space which said mechanism would occupy.

The folder 125, herein shown as a stationyary plow, is formed at the lower end of an arm 127 whilch is fastened at i upper end by ya` screw 1.19 to the bracket 21 and is thus carried by theoverhanging arm 5.

The operation of the machine is as fol lows t-The pressenfoot is Yraised by manip ulating a linger-lever 102, and the inner margin of the vamp placed against the genie 12, the arm extending into the dpenin in the vamp and the vamp being suspende on the amm with the greater portion of the vamp hanging down below the level of arm. Power is then applied to the shaft 4, the veinl being fed intermittently by the action o the feeding-foot 24 and the presser-foot 92. As the margin prog-rea siwely encounters the curved falce of lille felder 125 a feld is formed, and this fold is subsequently pressed by the fold-presser 101. The inner *margin of thecloeed vlamp is thus operated upon unftil the starting point has been reached again and the entire margin has been folded.l urin the folding of the throat it is usually des ratble f to throw in the snippinighiife wird" we.:

the rate of feed, both of which may be accomplished by operating a treadle (not shown) which is attached to the treadle rod 68.

Although the invention has been set forth as embodied in a particular machine in which the work is'supported on the end of a substantially horizontal arm, it should be understood that the invention is not limited in the sco e of its la plication t-o the particular mac ine which lilas been described.

Having thus described my invention, what; I claim as new and desire to secure by Letters Patent of the United States is:

1. A folding machine, having in combination, a Work-supporting arm of small cross-section adapted to enter the opening in a closed vamp and to permit the vamp to be fed along the supporting face thereof, driven members for engaging the vamp, mechanism for driving said members, and means independent of the work-supporting arm upon which all of said members and mechanisms are mounted.

2. A folding machine, having in combination, a Work-support of small cross-section adapted to enter the opening in a closed vamp and to permit the vamp to be fed over the supporting face thereof, an arm having its free end in proximity to said supporting face, means for feeding the vamp, means for folding the margin thereof, and means for pressing the fold, said last-named means including a fold-presser mounted on the arm.

3, A folding machine, havin in combination, a Work-support of smal cross-section adapted to enter the opening in a closed vamp and to permit the vamp to be fed over the supporting face thereof, an arm having its free end in proximity to said supporting face, means for feeding the vamp, means for folding the mar in thereof, and means for pressing the old, said last-named means including a fold presser and operating means therefor mounted on the arm.

4. A folding machine, having in combination, a frame havin a Work-supporting arm of small cross-section projectinv therefrom in position to permit a closed vamp to be passed around said arm and a second arm overhanging the first-named arm, and feeding, folding and fold-pressing members mounted on the adjacent ends of said arms and including a fold-pressing member mounted on the overhanging arm.

5. A folding machine, having in combination, a frame having a Work-supporting arm of small cross-section projecting therefrom in position to permit a closed vamp to be passed around said arm and a second arm overhan ing the first-named arm, means for feeding t e vamp, means for forming a fold in the margin thereof, and means for pressing the fold, said feeding and foldrcssing means being mounted on the overanging arm.

6. A folding machine, having in combination, a frame havin a worlesupporting arm of small cross-section projecting therefrom in position to permit a closed vamp to be passed around vsaid arm and a second arm overhanging the first-named arm, and feeding, foldinig landi fold-pressing members mounted on the overhanging arm.

7. A folding machine, having in combination, a frame having a work-supporting arm of small cross-section projecting therefrom at a height sufficient to permit a closed vamp to be passed around said arm and a second arm overhanging the first-named arm, and feeding, folding and fold-pressing members mounted on the overhanging arm.

8. A folding machine, having in combination, a frame having a Work-supporting arm of small cross-section projecting therefrom at a height sufficient to permit a closed vamp to be passed around said arm and a second arm overhanging the first-named arm, and feeding, snipping, folding and fold-pressing members mounted on the overhangin arm.

9. A fol ing machine, having in combination, a frame havin a Work-supporting arm of small cross-sectlon proj eeting therefrom at a height sufficient to permit a closed vamp to be passed around said arm and a second arm overhanging the firstnamed arm, feeding, folding and fold-pressing members mounted on the overhanging arm, and operating mechanism for the feed member and the fold-pressing member also mounted on the overhanging arm.

10. A folding machine, having in combination, a frame comprising a Work-supporting portion and an overhangin arm, and a feed member, a stationary fodder and a fold-presser all mounted on said arm.

11. A folding machine, having in combination, a support for the Work, means for feeding the Work and forming a fold in the margin thereof, a fold-presser, means for vibrating the fold-presser, and a link pivoted to the fold-presser and to a stationary part of the frame, said link serving to control the direction of movement of the foldpresser.

12. A folding machine, having in combination, a support for the work, means for feeding the Work and for forming a fold in the margin thereof, a fold-presser, means for vibrating the fold-presser, and a guiding link pivoted at separated points respectively` to the fold-presser and to the frame of the machine, the link and the pivots being located to move the foldresser in a direction transverse to the fo ded margin and toward the unfolded portion 0f the work during the pressing movement of the fold-presser.

13. A folding machine, having in combination, n support for the work, means for feeding the Work und for forming a fold in the margin thereof, a fold-presser, means for vibrating the fold-presser, Iind e guiding link pivoted at separated points respecmlaa tively to the foldresser und to the frame of the machine, tiie pivot which oonneots 10 the link to the fold-presser being located above the pivot which connects the link to the frame.

In testimony whereof I have signed my nume to this specification.

PERLEY R. GLASS.

Copies o! this patent may be obtnine for five cents each, by addressing the Gommiuioner ot latentl, Wallington, D. 0. 

